car4s/application/admin/controller/user4s/Goodlog.php

<?php

namespace app\admin\controller\user4s;

use app\common\controller\Backend;
use app\common\model\user4s\User;
use app\common\model\user4s\Log;
use app\common\model\user4s\Goods;
use Exception;
use think\Db;
use think\exception\PDOException;
use think\exception\ValidateException;

/**
 * 兑换订单
 *
 * @icon fa fa-circle-o
 */
class Goodlog extends Backend
{

    /**
     * Goodlog模型对象
     * @var \app\common\model\user4s\Goodlog
     */
    protected $model = null;
    protected $searchFields = 'id,description,user_name';

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\common\model\user4s\Goodlog;

    }



    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */


    /**
     * 查看
     */
    public function index()
    {
        //当前是否为关联查询
        $this->relationSearch = true;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();

            $list = $this->model
                    ->with(['user','admin'])
                    ->where($where)
                    ->order($sort, $order)
                    ->paginate($limit);

            foreach ($list as $row) {
                
                
            }

            $result = array("total" => $list->total(), "rows" => $list->items());

            return json($result);
        }
        return $this->view->fetch();
    }
    // public function add()
    // {
    //     if (!$this->request->isPost()) {
    //         $user4s_id = $this->request->get("user4s_id/d");
    //         if ($user4s_id > 0) {
    //             $user4s=$this->user_model->get($user4s_id);
    //             if(isset($user4s->id)){
    //                 $this->view->assign("user4s", $user4s);
    //             }
    //         }
    //     }
    //     if ($this->request->isPost()) {
    //         $params = $this->request->post("row/a");
    //     }
    //     return parent::add();
    // }
    public function add()
    {
        if (!$this->request->isPost()) {
            $user4s_id = $this->request->get("user4s_id/d");
            if ($user4s_id > 0) {
                $user4s=$this->user_model->get($user4s_id);
                if(isset($user4s->id)){
                    $this->view->assign("user4s", $user4s);
                }
            }
        }
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                //写兑换记录
                $this->user = new User();
                $this->log = new Log();
                $user = $this->user->get($params['user4s_id']);
                $good = Goods::get($params['good_id']);
                $num = intval($params['good_num']);
                if(!$user){
                    $this->error('用户不存在');
                }
                if(!$good){
                    $this->error('商品不存在');
                }
                if(!$good){
                    $this->error('商品不存在');
                }
                if($good->inventory < $num){
                    $this->error('商品库存不足，当前只有'.$good->inventory.'件');
                }
                $need_price = $good->price * $num;
                $need_integral = $good->integral * $num;
                if($user->integral < $need_integral){
                    $this->error('用户积分不足，用户只有'.$good->integral);
                }
                if($user->balance < $need_price){
                    $this->error('用户余额不足，用户只有'.$good->balance.'元');
                }
                $this->user->startTrans();
                try {
                    if($need_integral > 0 ){
                        $this->user->where('id', $user->id)->setDec('integral', $need_integral);
                    }
                    if($need_price > 0 ){
                        $this->user->where('id', $user->id)->setDec('balance', $need_price);
                    }
                    $good->where('id', $good->id)->setDec('inventory', $num);
                    $good->where('id', $good->id)->setInc('sales', $num);
                    $logok = $this->log->addLog($user->id,$this->auth->id,$need_price,$need_integral, '兑换商品'.$good->title.' x '.$num.'件');
                    if(!$logok){
                        $this->user->rollback();
                        $this->error('兑换失败');
                    }
                    $params['admin_id'] = $this->auth->id;
                    $params['good_name'] = $good->title;
                    $params['user_name'] = $user->name;
                    $params['integral'] = $need_integral;
                    $params['price'] = $need_price;

                    $result = $this->model->allowField(true)->save($params);
                    if($result !== false && $logok){
                        $this->user->commit();
                        $this->success('兑换成功');
                    }else{
                        $this->user->rollback();
                        $this->error('兑换失败');
                    }
                } catch (ValidateException $e) {
                    $this->user->rollback();
                    $this->error($e->getMessage());
                } catch (PDOException $e) {
                    $this->user->rollback();
                    $this->error($e->getMessage());
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        return $this->view->fetch();
    }
}